Women will have pain when ejaculating, mainly considered with external damage, gynecological diseases and semen allergy and so on. 1. External damage: During ejaculation, the action is too violent, resulting in vaginal damage, which can cause pain and other uncomfortable symptoms. 2. Gynecological diseases: women with vaginitis, cervicitis and vaginal polyps may experience pain and itching after intercourse. 3. semen allergy: clinically, some women have semen allergy, after having sex without safety measures, it may trigger an allergic reaction, and then symptoms such as pain in the lower body. There are many reasons why a woman may feel pain during ejaculation, and if this phenomenon persists for a long period of time, she should seek medical treatment as soon as possible.